Vauxhall Astra L

Automatic transmission fluid capacity & service interval

Vauxhall Astra L uses automatic transmission fluid with a capacity range of 2,5 to 6 liters. The data covers 5 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
Astra L 1.2 Turbo (81 kW), HNP (2021- )
  • Use: Normal
  • Capacity 6 liter (Dry fill)
  • Capacity 2,5-3,5 liter (Service fill)
  • Code: ATN8 8/1
Astra L 1.2 Turbo (96 kW), HNS (2021- )
  • Use: Normal
  • Capacity 6 liter (Dry fill)
  • Capacity 2,5-3,5 liter (Service fill)
  • Code: ATN8 8/1
Astra L 1.5 Diesel (96 kW), YHZ (2021- )
  • Use: Normal
  • Capacity 6 liter (Dry fill)
  • Capacity 2,5-3,5 liter (Service fill)
  • Code: ATN8 8/1
Astra L HYBRID (133 kW), DGX (2021- )
  • Use: Normal
  • Capacity 6 liter (Dry fill)
  • Capacity 2,5-3,5 liter (Service fill)
  • Code: eATN8 8/1
Astra L HYBRID (165 kW), DGY (2021- )
  • Use: Normal
  • Capacity 6 liter (Dry fill)
  • Capacity 2,5-3,5 liter (Service fill)
  • Code: eATN8 8/1

Additional Notes

  • Across all five Vauxhall Astra L configurations listed, the automatic transaxle dry fill capacity is 6 liters, a figure that represents the total fluid volume required when filling a fully drained or rebuilt unit from empty.
  • The service fill capacity for each configuration is specified as a range of 2.5-3.5 liters, reflecting the variable amount of fluid retained in the torque converter and valve body after a standard drain procedure rather than a complete overhaul.
  • The gap between the 6-liter dry fill and the 2.5-3.5 liter service fill range indicates that roughly half or more of the total fluid volume remains trapped in the transmission assembly during a routine fluid change, which is characteristic of automatic transaxle designs.
  • The 1.2 Turbo in 81 kW (HNP) and 96 kW (HNS) outputs share identical automatic transaxle fluid capacities, with both dry and service fill figures matching exactly despite the difference in power output between the two engine variants.
  • The 1.5 Diesel (96 kW, YHZ) configuration carries the same 6-liter dry fill and 2.5-3.5 liter service fill specification as the petrol variants, indicating a shared automatic transaxle unit across the diesel and petrol Astra L lineup.
  • Both hybrid configurations, the 133 kW (DGX) and 165 kW (DGY), are also specified with the same 6-liter dry fill and 2.5-3.5 liter service fill capacities, applying to the automatic transaxle component of the hybrid drivetrain.
  • All five configurations are listed under normal use conditions, meaning the stated service fill range of 2.5-3.5 liters applies specifically to standard operating environments rather than severe or extended-duty cycles.

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